Bolt



Dec. 30. 1924.

w. D. VAUGHAN BOLT Filed Jan. 28, 1924 Fig.5.

Patented Ee s. 39, 1924.

outrun stares PATENT HALTER D. VAUGHAN, OF HUTLAND, VERMONT.

BOLT.

Application filed January 28, 1924. Seriallq'o. 689,891.

its primary object the provision in a manone end ot the bolt shank withthe head rener hereinafter set forth, of a bolt having a. head adaptedto be removed from the shank of the bolt and provided with meanswhereby, when the bolt is in position, the head will be tightly andimmovably held on the shank.

It is well known that in certain structures particularly automobiles,railroad cars and locomotives, there are places about the fi ame whereother parts of the machine are so closely located thereto that boltscannot be put through the frame from the inside but must be put throughfrom the outside bringing the nut on the inside in a position verydiflicult to reach with a wrench. in applicants structure of bolt thistrouble is eliminated, for in using his bolt the head is removed fromthe end of the shank, and that end to which the head is attached isinserted through the bolt hole whereupon the head is applied to theother end after it has passed through the hole and the nut is applied tothe threaded end which is left extending outwardly from the outside ofthe material through which the bolt has been passed, thus placing thenut in an open position and easily accessiole for the application of awrench or tightening means.

The final object of this invention is the provision in a manner ashereinafter set forth, of a bolt having a removable head, which boltstructure is simple in construction, strong, durable and inexpensive tomanufacture.

The invention will be best understood from a consideration of thefollowing detailed description taken in connection with the accompanyingdrawings forming part of this specification, with the understanding thatthe invention is not confined to any strict conformity with the showingof the drawings, but may be changed and modified so long as such changesand modifications mark no material departure from the salient featuresof the invention as expressed in the appended claims.

In the drawings Figure l is aside elevation of the device embodying thisinvention, shown as applied, with a part thereof broken away.

F gure 2 is an end elevation the bolt shank and the removablehead.

Figure 8 is a sectional view taken upon the line 3-3 Figure 1.

Figure 4 is a detail perspective View of moved and showing the recessadapted to receive the key by which the head is secured to the shankand,

Figure 5 is a detail perspective view of the key by which the headsecured to the shank of the bolt.

Referring now to the dra vings in detail, wherein like numerals of=.efcrence indicate corresponding parts throughout the several views,numeral 1 indicates a body of material through which there is extendedthe shank of a bolt 2 having the usual screw threads 3 upon one endthereof and the nut e threaded thei'eonand by which the work is securedbetween the head and the not of the bolt. The other end of this shank 2instead of having the usual head formed integral therewith as is thecase in the bolts at present in use, has the head end 5 finished offwith the diameter equal to the diameter of the body of the bolt shank.In the side of this head end 5 of the shank there is formed a notch 6which is formed by cutting into the body of the shank at an angle withrespect to the longitudinal axis of the bolt, the cutting deepening asit progresses toward the outer or head end 5 of the bolt and terminatesinwardly of the end whereat atrans verse cut is made removing a portionof the body of the shank and forming the vertical or transverse wall 7.

The head 8 of this bolt is formed separately from the shank as isclearly shown, and has a central bore therethrough of a diameter equalto the diameter of the bolt, but the continuity of the wall of this boreis broken by the formation of a recess 9 therein which recess tapers anddeepens from the inner end of the bore of the bolt toward the outer endand at its outer end is substantially semi-circular in contour.

When the head 8 is slipped over the end 5 of the shank 2, the recess 9is adapted to coincide with the notch 6 formed in the body of the boltshank and there is provided a key 10 of tapering substantiallysemi-circular design, the flat face 11 of which is adapted to seatagainst the face of the notch 6, and the end 12 adapted to abut the wall7 formed in the end of theshank, with the semi-circular portion fittinginto the recess 9 of the bolt placed in a position difficult to be head,which assembly is clearly shown in Figure 1 of the drawings.

In applying this bolt to a piece of work, when there is another piece ofwork so close that the bolt cannot be extended through the one piecefrom the side adjacent to the other piece, the head 8 is removed fromthe shank and the shank is passed through the work from the outside andextended therethrough until the head end 5 projects beyond the innerside of the'piece of work. The head 8 is then inserted over the end ofthe shank and slips back until the outer side is close to the inner orshallow end of the notch 6 whereuponthe key lO'is placed in the notch 6and the head slips forward againuntil the seen that a bolt is providedhaving many advantages over the bolts at present in use for with a boltof'this type the nuts can always be so positioned that they will not bereached by a wrench.

What I claim is r r 1. A bolt of the characterset forth com prising, ashank having one end peripherally threaded to receive thereon a nut, aheao freely slidable upon said shank, and a key adapted to engage insaid' shankand upi and the other side forming a gradual u'pward inclinefrom the body of the shankto wards the outer end thereof, and a headhaving a smooth bore therethrough forjfree allow it to be slid over saidwedge for setting up a locking engagement with the'shank.

3. A bolt of the character described comprising, ashank peripherallythreaded at one end to receive thereon va nut, and'i having formed inits side at the other end thereof a tapering notch terminating near theouter end in a transversely extending wall, a head 1 having aboretherethrough to-receive said notched end and further having a taperingrecess in'the wall of said bore increasing in depth from the inner tothe outer end thereof, and means common to said notch and recess forpreventing the removal of said head from said shank. v *In testimonywhereof, I affix my signa-

